Term
| IS THE PRESSURE-VOLUME LOOP SUPERIMPOSED WITHIN THE ACTIVE AND PASSIVE TENSION CURVE OF CARDIAC MUSCLE? |
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Definition
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Term
| IN PHASE 1 OF THE PRESSURE VOLUME LOOP WE HAVE AN INCREASE IN VOLUME, BUT A SMALL INCREASE IN PASSIVE LEFT VENTRICULAR PRESSURE. WHAT PHASE IS THIS CALLED? |
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Definition
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Term
| AN INCREASE IN LEFT VENTRICULAR PRESSURE WITH NO CHANGE IN LEFT VENTRICULAR VOLUME IS KNOWN AS WHAT PHASE? |
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Definition
| PHASE 2. THE ISOMETRIC CONTRACTION |
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Term
| WHAT OCCURS BETWEEN PHASE 1 AND PHASE 2? |
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Definition
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Term
| ON THE X AXIS, THE MAXIMUM AMOUNT OF VOLUME THAT THE VENTRICLE IS FILLED WITH AT THE END OF DIASTOLE IS KNOWN AS WHAT? |
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Definition
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Term
| WHAT OCCURS AT THE END OF THE ISOMETRIC CONTRACTION PHASE? IN OTHER WORDS WHAT VALVE OPENS? |
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Definition
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Term
| IF VOLUME IS THE X AXIS WHAT IS THE Y AXIS? |
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Definition
| PRESSURE WHICH IS AFTERLOAD |
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Term
| WHY IS EJECTION NOT AN ISOTONIC CONTRACTION? |
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Definition
| THE PRESSURE IS INCREASING AND THE VOLUME IS DECREASED. WE CALL THIS SYSTOLE |
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Term
| WHAT IS THE PEAK AT THE TOP OF PHASE 3? |
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Definition
| MAXIMAL SYSTOLIC PRESSURE. |
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Term
| WHY IS DICROTIC NOTCH NOT PRESSURE ON THE PRESSURE VOLUME LOOP? |
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Definition
| BECASUE IT'S IN THE VENTRICLE, NOT THE AORTA. |
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Term
| WHAT IS HAPPENING DURING ISOVOLUMETRIC RELAXATION IN RELATION TO PRESSURE AND VOLUME? |
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Definition
| DECREASE IN LVP AND NO CHANGE IN LV VOLUME. |
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Term
| HOW IS SYSTOLE AND DIASTOLE DEFINE? |
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Definition
| AS CHANGES IN VENTRICULAR VOLUME WHICH MEANS THAT THE ISOVOLUMETRIC PHASES ARE NEITHER SYSTOLIC NOR DIASTOLIC BECAUSE THE VOLUME IS NOT CHANGING. |
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Term
| WHAT IS THE DIFFERENCE FROM A LEFT VENTRICULAR AND RIGHT VENTRICULAR PRESSURE VOLUME LOOP? |
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Definition
| THE VOLUMES ARE THE SAME BUT THE PRESSURE DIFFER. |
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Term
| BETWEEN WHAT PHASES IS LVESV MEASURED? |
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Definition
| EITHER AT THE END OF PHASE 3 TO THE BEGINNING OG PHASE I. THE VOLUME IS THE SAME FOR THESE. |
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Term
| WHAT ARE 2 WAYS TO INCREASE STROKE VOLUME? |
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Definition
| INCREASE IN LVEDV (PRELOAD) OR DECREASE IN LVESV (AFTERLOAD) |
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Term
| WHAT IS THE LIMITATION WITH THE VOLUME PRESSURE LOOP MODEL? |
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Definition
| HR IS NOT PRESENT. IT IS ALSO HARD TO DETECT CONTRACTILITY. |
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Term
| WHAT IS THE TERM FOR ANY MECHANISM THAT, AT CONSTANT MUSCLE LENGTH (CONSTANT PRELOAD), SHIFTS THE FORCE VELOCITY CURVE TO THE RIGHT? |
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Definition
| CONTRACTILITY (+DP/DT). IF THE MUSCLE LENGTH CHANGES THE PRELOAD CHANGES, THAT IS IMPORTANT. |
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Term
| WHAT IS THE TERM FOR THE INTRINSIC ABILITY OF MYOCARDIAL CELLS TO DEVELOP FORCE AT A GIVEN CELL LENTH (INDEPENDENT OF ANS)? |
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Definition
| PRELOAD. ITS THE AMOUNT OF ACTIN AND MYOSIN OVERLAP. PRELOAD- THE STARTING LENGTH DETERMIENS THE FORCE OF CONTRACTION. THAT'S FRANK-STARLING. |
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Term
| WHAT IS ANOTHER NAME FOR CONTRACTILITY? |
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Definition
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Term
| HOW IS THE CHRONOTROPHY EFFECTS? |
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Definition
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Term
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Definition
| CONDUCTION OF NERVE IMPULSES |
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Term
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Definition
| HOW FAST DOES THE VENTRICULE LOSES PRESSURE, OR HOW FAST IT RELAXES. |
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Term
| IF PRELOAD IS INCREASED WHAT HAPPENS TO THE VELOCITY OF CONTRACTION? |
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Definition
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Term
| AT ANY GIVEN AFTERLOAD, IF I INCREASE THE PRELOAD, THE VELOCITY OF SHORTENING WITH DO WHAT? |
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Definition
| INCREASE. IT WILL SHORTEN MORE QUICKLY. |
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Term
| DOES AN INCREASE IN PRELOAD INCREASE IN VMAX? |
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Definition
| NO. PRELOAD INCREASES VELOCITY OF CONTRACTION, BUT PRELOAD DOES NOT INCREASE V-MAX. |
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Term
| WHAT DOES CONTRACTILITY DO TO VMAX? |
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Definition
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Term
| WHAT TYPES OF DYSFUNCTION IS A PATIENT WHO HAD AN MI GOING TO DEVELOP? |
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Definition
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Term
| WHAT IS THE PROBLEM WITH SCAR TISSUE? |
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Definition
| IT IS NON-COMPLIANT. IT DOESN'T CONTRACT ON IT'S OWN. |
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Term
| HOW WOULD YOU DESCRIBE SYSTOLIC DYSFUNCTION? |
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Definition
| SCAR TISSUE ON THE VENTRICLES POST MI THAT ISN'T ABLE TO GET BLOOD OUT BECAUSE THE SCAR TISSUE ISN'T COMPLIANT AND DOESN'T CONTRACT ON IT'S OWN. |
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Term
| HOW WOULD YOU DESCRIBE DIASTOLIC DYSFUNCTION? |
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Definition
| NOT ABLE TO GET THE BLOOD INTO THE VENTRICLE DUE TO SCAR TISSUE. |
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